// ALTER DER KINDER
$(document).ready(function () {

    $("#kinderanzahl").change(onSelectChange);
    for (var i = 1, n = 6; i < n; ++i) {
        $("#kinderalter" + [i]).change(function () {
            $("#tb_" + this.id).val(this.value);
        });
    }
});

//var prm = Sys.WebForms.PageRequestManager.getInstance();
//prm.add_endRequest(function() {

$("#kinderanzahl").change(onSelectChange);
for (var i = 1, n = 6; i < n; ++i) {
    $("#kinderalter" + [i]).change(function () {
        $("#tb_" + this.id).val(this.value);
    });
}
//});

function onSelectChange() {
    var selected = $("#kinderanzahl option:selected");
    if (selected.val() != 0) {
        $("#tb_kinderalter").val(selected.text());
        $("#kinderAlter").css("display", "inline");
        $("#kinderanzahl option").each(function (i) {
            if ($(this).val() <= selected.val()) {
                $("#kinderalter" + $(this).val()).css("display", "inline");
            } else {
                $("#kinderalter" + $(this).val()).css("display", "none");
            }
        });
    } else {
        $("#tb_kinderalter").val("");
        $("#kinderAlter").css("display", "none");
        $("#kinderanzahl option").each(function () {
            $("#kinderalter" + $(this).val()).css("display", "none");
        });
    }
}